Viki Joergens

Dr. rer. nat. Viki Joergens
Research staff scientist
Margarete-von-Wrangell Fellow
Marie Curie Fellow

Max-Planck-Institute for Astronomy, Heidelberg, Germany, Phone: + 49 - 6221 - 528 464, Email: viki @
Center for Astronomy Heidelberg, Institute of Theoretical Astrophysics, University of Heidelberg, Germany


  Invited talk 'The formation of free-floating planets', German-Japanese Exoplanet Conference, Heidelberg, Nov 4-7, 2014
  Öffentlicher Vortrag 'Frei-fliegende Planeten und Braune Zwerge', 15. Südthüringische Astronomische Tag, Lehrerfortbildung, Suhl, Dez 6, 2014
  Talk 'Substellar formation processes', Königstuhl Colloquium, Max Planck Institute for Astronomy, Heidelberg, Dec 12, 2014, 15:00
  Invited talk 'Disks around extremely low-mass stars/brown dwarfs ', Chemical diagnostics of star & planet formation with ALMA,
        Garching, Germany, Jan 13-15, 2015


  'A great new book on brown dwarfs', from D. Eicher, Dave's Universe on Nov 6, 2014, Astronomy Magazine
  'Neither Star nor Planet', from Th. Bührke, MaxPlanckResearch 3/2014   [pdf] [link]
  'Nicht Stern - Nicht Planet', von Th. Bührke, MaxPlanckForschung 2/2014   [pdf] [link]
  Podcast von Welt der Physik über Braune Zwerge   [audio] [text]
  Book "50 Years of Brown Dwarfs - From Prediction to Discovery to Forefront of Research", V. Joergens (Ed.), Springer 2014,
          with contributions from: I. Baraffe, G. Basri, M. Cushing, V. Joergens, T. Nakano, B. Oppenheimer, R. Rebolo, J. Tarter
          [flyer] [springer] [review S&W] [blog Dave's Universe]

  Blurring the lines between stars and planets: Lonely planets offer clues to star formation [press release] [media echo] [A&A Letter]

Publications: Refereed Publications             Proceedings of Conferences             Complete list of publications (PDF)
The coolest 'stars' are free-floating planets (Joergens, Bonnefoy, Liu et al. 2014, in press) [pdf]
Gaia Detection Capabilities of Spectroscopic Brown Dwarf Binaries (Joergens & Reffert 2014, in press) [pdf]
OTS44: Disk and accretion at the planetary border (Joergens, Bonnefoy, Liu et al. 2013, A&A Letter) [pdf]

Curriculum Vitae:  

Seminar on Protostars and Planets (MVSem), winter term 2014/15, University of Heidelberg, Philosophenweg 12, Room 105, Thursday 9:15

Ringberg conference: "50 Years of Brown Dwarfs: from Theoretical Prediction to Astrophysical Studies" (Ringberg castle, Oct 2012)
                                                                  PDF files of talks and posters                   MPIA Press release                   Galileo Inst. PR

Movie of the brown dwarf binary ChaHa8: start video
Previous events:
Previous teaching:
Astronomers revealed in the last decade that the substellar mass regime is densely and continuously populated. Previously we knew only the Solar System planets in this domain. The detection of hundreds of planets orbiting other stars than our Sun, and hundreds of so-called brown dwarfs, which fill the gap in mass between planets and stars, challenges our view of how are Solar Systems formed. Through application of cutting-edge observing techniques and facilities, I am observationally exploring the processes that lead to the formation of planets and brown dwarfs.
Viki Joergens / viki @